Well-drilling machine.



J. A. SHANLEY. WELL DRILLING MACHINE. APPLICATION FILED lAu zsI I9I6.

Patented Aug. '29, 1916.

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JOHN A. SHANLEY, or won'rmne. scorn anama.

WELL-DRILLING MACHINE.

Specification of Letters Patent.

Patented na ea, tea o.

Application Med January 29, 1916. Serial No. 75,075.

' '0 all whom it may concern:

Be it known that 1, JOHN A. SHANLEY, a citizen of the United States,residing at Northing, in the county of Lincoln and State of SouthDakota, have invented new and useful Improvements in Well-DrillingMachines, of which the following is a specification.

This invention is an improvedwell drilling machine.

The object of the invention is to provide an improved machine of thischaracter which is extremely cheap and simple in construction; whichrequires only one man to operate it which enables the strokes of thedrill tool to be regulated at will, and which enables the tool to berapidly drawn up at of the machine from place to place.

any time required to prevent it frombeing caught by a cave in and whichprovides only one drum which is used both for drilling and for'drawingup the tool.

The invention consists in the construction, combination, and arrangementof devices, hereinafter described and claimed.

In the aceompanyim drawings:l3igure 1 is a side elevation of a welldrilling machine constructed in accordance with my invention. Fig. 2 isa plan of the same partly in horizontal section on the plane indicatedby the line 22 of Fig. 1. Fig. 3 is partly an elevation and partly asectional view on the plane indicated by the line 3-3 of Fig. 2.

A frame 1 is here shown which may in practice he of any suitable sizeand construction and which may, if desired, be mounted on trucks, tofacilitate the transportation A. pairof standards 2 rise from oppositesides of the frame. A bar 3 connects the upper ends of the standards andis provided with a pulley 4. Braces 5 are provided for the standards asshown. A shaft 6 is mounted in bearings 7 and is provided at one endwith a power pulley 8 which is driven by.a power belt 9 to cause theshaft to revolve when the machine is to be operated. A spur wheel 10, todrive a fly wheel or balance wheel is fixed to the shaft for rotationtherewith. A cam 11 is arranged at one side of the spur wheel and ismounted on the shaft so that said cam can be turned independently of theshaft and the cam is provided with a peripheral camgroove 12 which isprovided at one side with an oblique "or V-shaped portion 13. The

cam has a radial lever arm 14 which is connected by a link 15 with alever 16. The lever may be employed for shifting the cam and may besecured at any desired position, to hold the cam in adjusted position-by a segment 17 and a dog 18.

A pair of tappet pins 19 operate in transverse openings in the spurWheel 10 and are arranged directly opposite each other and on oppositesides of the shaft 6. Each tappet pin has an inwardly extending tappetstud or roller 20 which engages the cam groove 12. The length of thetappet pins is such that when their tappet studs" are in the straightportion of the cam groove, their outer ends project beyond one side ofthe spur wheel and when their tappet studs are in the apex of theoblique portion 13 of the cam groove; their outer ends are flush with vthe corresponding side of the spur wheel.

A trip lever 21 for operating the rope 22 by which the tool 23 issuspended and raised and lowered, is pivotally mounted on the shaft andis arranged in the path of the tappet pins. Said trip lever has apulley24: which is engaged by the rope. The rope also passes over thepulley 2a and is attached to a drum 25 which is loosely mounted on theshaft. At one end of the drum are spur teeth 26. A pawl 27 is providedfor engaging the spur teeth and looking the drum against rotation whendesired. The pawl is pivotally mounted as at 28 and has an arm 27. Aspring 30 for engaging the pawl with spur teeth of the drum is attachedto said arm. A lever 31 is provided for tripping the pawl and isconnected by a link rod 32 to the pawl arm 29. A segment 35 and dog 34are provided to lock the lever 31 in adjusted position.

I also provide a clutch 25 which .is here SllOWil as a friction clutchfor locking-the drum to the shaft. for rotation with the shaft whendesired, to cause the drum to wind up the rope and thereby pull up thetool from the well. \Vhen the clutch is disengaged from the drumnnd thepawl is engaged with the drum, the latter is held sta tionary so thatthe rope will suspend the tool at the required point in the well andpermit the trip lever, which is operated by the tappet pins, to impartthe required very tical reciprocating motion to the tool and hence causethe latter to drill the Well. This clutch is provided with ashipper'lever 36 to enable the clutch to be operated and the grasp andoperate either shipper lever may be held in adjusted position-by a dog37 which may be engaged with either of a pair of lock notches 38, 39. 7By adjusting the cam by means of its lever 16, the length of the strokeof the tappet lever, and hence also of the tool, may be adjusted asdesired.

It will be observed that the controlling leverstare' all arranged at oneend of the machine and in close proximity to one another so; that onlyone operative is required. He is stationed at said end of the machineand may of said levers to stroke of the tool regulate the length of theout the rope by the and to wind or pay drum,"as may be required fromtime to time g during the operation to the trip lever,

of the machine. As the spur wheel is provided with two of the tappetpins which are arranged diametrically opposite each other, and as thetappet Pins successively impart tool lifting stroke deliver two strokesto each rotation of the shaft so that the well drilling proceeds very exeditiously.- 4

airing-described the invention, what is claimed is; Y 1; In a welldrilling machine'of the class a shaft mounted. in bearings in the frame,means to rotate the shaft, an element revoluble with the shaft, a tappet ,pin mounted for reciprocating movementin said element and arrangedsubstantiallyparallel with the shaft, a trip lever pivotally mounted onsaid shaft to operate a drill rope and arranged in the vpath of saidtappet pin, a relatively fixed cam to operate the said tappet 'pin' andcause the same to engage and disengage said trip lever at each rotationof the shaft, a drum mounted loosely on the shaft for winding andunwinding the drill rope, means to-lock and release the I drum, andmeans to lock the drum to or re- "lease the same from the shaft.

- allel with the shaft,

2. In a well drilling machine of the class described, aframe, a shaftmounted in bearings in the frame, means to rotate the shaft,

an element revoluble with the shaft, a tappet pin mounted forreciprocating movement in said element and arranged substantially paratrip lever pivotally mounted on said shaft to operate a drill rope andarranged in the path of said tappet the latter causes the tool to the sh3. In a well drilling machine of the class V described, a frame, a shaftmounted in bea rings in the frame, means to rotate the shaft, anelementrevoluble with the shaft, a tappet pin mounted for reciprocatingmovement in said element and arranged substantially parallel with theshaft, a trip lever pivotally mounted on said rope and arranged in thepath of said tappet pin, a relatively fixed cam to operate said tappetpin and cause the same to engage or isengage said trip lever at eachrotation of aft, a drum mounted loosely on the shaft for winding andunwinding the drill rope and provided with ratchet'teeth, a pawl toengage and disengage the ratchet teeth and thereby lock or release thedrum, and means to lock the drum same from the shaft.

a. In a well drilling machine ofthe class described, a frame, a shaftmounted in bearings in the frame, means to rotate the shaft,

' an element revoluble with the shaft, :1 t-n -pet pin mounted forreciprocating movement'in said element and arranged substantiallyparallel with'the shaft, a trip lever pivotally mounted on said shaft tooperate a drill rope and arranged in the path of said tappet pin, arelatively fixedcam to operate the said tappet pin and cause the same toengage and disengage said trip lever at each rotation of the shaft, adrum mounted loosely on the shaft for winding and unwinding the drillrope, means to lock and release the drum, and a clutch to lock the drumto or release the same from the shaft.

In testimony whereof I aflix my signature in presence of two witnesses.

JOHN A. SHANLEY.

lYitnesses:

ALICE G. HANNAH, Asa Fonnnsr.

to or release the

